/**
 * 自适应布局 
 * **/
//动态调整dpr和字体大小
			! function(d) {
				var c = d.document;
				var a = c.documentElement;
				var b = d.devicePixelRatio;
				var f;

				function e() {
					var h = a.getBoundingClientRect().width,
						g;
					if(b === 1) {
						h = 750
					}
					if(h > 750) h = 750; //设置基准值的极限值,按设计稿的宽度来配置
					g = h / 7.5;
					a.style.fontSize = g + "px"
				}

				if(b > 2) {
					b = 3
				} else {
					if(b > 1) {
						b = 2
					} else {
						b = 1
					}
				}
				a.setAttribute("data-dpr", b);
				d.addEventListener("resize", function() {
					clearTimeout(f);
					f = setTimeout(e, 200)
				}, false);
				e()
			}(window);